1550864545 has 16 divisors (see below), whose sum is σ = 1900184832. Its totient is φ = 1214859520.

The previous prime is 1550864537. The next prime is 1550864551. The reversal of 1550864545 is 5454680551.

It is not a de Polignac number, because 1550864545 - 2³ = 1550864537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30360 + ... + 63430.

It is an arithmetic number, because the mean of its divisors is an integer number (118761552).

Almost surely, 2^1550864545 is an apocalyptic number.

It is an amenable number.

1550864545 is a deficient number, since it is larger than the sum of its proper divisors (349320287).

1550864545 is a wasteful number, since it uses less digits than its factorization.

1550864545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33272.

The product of its (nonzero) digits is 480000, while the sum is 43.

The square root of 1550864545 is about 39381.0175719216. The cubic root of 1550864545 is about 1157.5096556999.

The spelling of 1550864545 in words is "one billion, five hundred fifty million, eight hundred sixty-four thousand, five hundred forty-five".